diff --git a/lib/src/cryptographic.dart b/lib/src/cryptographic.dart
index 9a4ed39..0017bd4 100644
--- a/lib/src/cryptographic.dart
+++ b/lib/src/cryptographic.dart
@@ -77,4 +77,18 @@ class Cryptographic {
     }
     return result.toString();
   }
+
+  /// Returns a random URL-safe Base64-encoded string (padded).
+  ///
+  /// [entropy] is optional number of bytes (default is 32).
+  ///
+  /// Example:
+  /// ```dart
+  /// Cryptographic().tokenUrlSafe(); // "ti3YgkBb5xftxifepAgtKSWNM6uDEgr0R_OZV6XpfRs="
+  /// Cryptographic().tokenUrlSafe(entropy: 64); // "HgudGr6yXgulDTK23x49-WPv3PqB7mn-D7n4fgNWMDGGCaffLD_0eXj4KpnAfPWImV5FzZiGFL4t3irb8FH29A=="
+  /// ```
+  String tokenUrlSafe({int entropy = 32}) {
+    final bytes = tokenBytes(entropy: entropy);
+    return base64UrlEncode(bytes);
+  }
 }
diff --git a/test/src/cryptographic_test.dart b/test/src/cryptographic_test.dart
index 8ac7d1e..f778084 100644
--- a/test/src/cryptographic_test.dart
+++ b/test/src/cryptographic_test.dart
@@ -63,5 +63,20 @@ void main() {
         );
       }
     });
+
+    test('returns url-safe base64 padded string', () {
+      final result = crypto.tokenUrlSafe();
+      expect(result.length, greaterThan(32));
+      expect(seededCrypto.tokenUrlSafe(), equals(seededCrypto.tokenUrlSafe()));
+
+      for (final entropy in [64, 128]) {
+        final result = crypto.tokenUrlSafe(entropy: entropy);
+        expect(result.length, greaterThan(entropy));
+        expect(
+          seededCrypto.tokenUrlSafe(entropy: entropy),
+          equals(seededCrypto.tokenUrlSafe(entropy: entropy)),
+        );
+      }
+    });
   });
 }